18
.
.
U2 (β), . 9.8,
, , (9.34), .
(. 9.9)
(9.21)
U1 . , . Zk U20 .
dz U2 쳭, , U2 = U20 ~U- (9.17) (9.10) , , 2 U , 1 U1. (. . 9.9), 2 U2 ϕ, Z (. . 9.2), U20 = U2 -U.
∆U2 . 9.9 b. bd, α = ϕ -ϕ, ∆U2 = U s(ϕ- ϕ). (9.10) (9.17) , U U20, U1 U1, U u.
, :
9.3
, ( ).
(9.31) (9.23):
, .
, (9.22):
(9.38) |
, U2 ~ U2; 2 =β I (9.30) S0 = U2 I2. (9.24):
9.39
, (9.27), (9.33) (9.35).
|
|
, (9.37), (9.38) (9.39), β:
βηmax, , = 0. ' β βηmax = √0 /, , 0 () βηmax 2 ()